Boiler



y 9, 1930. L. D. SUMMERS 1,711,592

' BOILER I Filed Aug. 18. 1927 3 Sheets-E5110 1 INVEN TOR.

I A TTORIYEYS.

July 29, 1am.

I... D. SUMMERS BOILER Filed Aug. 18, 1927 3 Sheets-Sheet 2 on E Wlll\ll.l."lll WI! I ll em: ILQEE mm vn TM 5 fi i m A TTORNEYS,

y 1930. 1.. D. SUMMERS' 1,771,592

BOILER Filed Aug. 18, 192'? s Sheets-Sheet 3 INVENTOR.

A TTORNEY.

Patented July 29, 1930 fsTATEs F ICE! i LOUIS ID. SUMMERS, or DECATUR,ILLINOISQ'ASSI'GNQBQ BY mnsnn nssienmnnrsl ro j 1 Bornnn a g Applicationfiled August 18,1927, s mina- 213,734.

i veni ent to move in parts andset up and easy to get through basementdoors and the like ofthe ...withou't disassembling all parts;

boiler. e n" V A further object of my invention is to. provide in a unitboiler organization a section thereof so positioned and operatively connected with other parts of the boiler as to economically provide agreaterlarea ofcontact-;with the hot products of combustion and aconsequent greater efficiency and economy resulting from the boilersuse. e o V A further object of my invention is to pro vide in a hotwater boiler having an 7 economizer section, a combustionchamber-adapted to economically and; successfully .burn oil, gas" orcoke withremarkable efficiency. 1 attain the objects ofmy'invention inthe boiler described in thespe'cifications herewith, recited in theclaims and illustratedin the accompanying drawings in which likereference numerals indicate like partsin the several figures. -s i a IReferring to the figures: 7 1 I t Figure 1 isia vertical section from'front to back through the center of my boiler. FigureQis a verticalsection 2-2 of Fig, ure? V 1' Figured is a-side elevation of my boiler.Figure {i isa 'frontfview of my boiler. V

Figure 5 is a horizontal section 5-5 of Figure? i Figure 6 is ahorizontal section 6 6 of Fig- Figure 7 is a top viewof my boilerr e aFigure 8is ahorizontal section 58-7-8 of Figureg3. e m v 5' Referring tothe construction of my boiler and method ofoperatin g the same,

I provide a combustion chamber communlcatively connected by pipesthrough passages adapted to accommodate the movement of the products ofcombustion from the COIllbllStlOIl chamber in a manner. that will:accomplish the maximum of heat transfer from thehot gases tothe water-2v before they leave the outlet gas chamber;

In order to accomplish the purpose of my 1, invention, I provlde incooperative combination a main ,boiler section 4and econon' izer sectionwhich sections are detachablyand operativel built together.

It Wasonce thought by engineers" that in order t o get the greatestefiiciency from the products of combustion that a strong draught wasneeded to causea speedy movement of the products offcomb ustion all theway from the combustion chamber to the outlet flue and in some kindsoffuel and in some situations aheatingfuel such a point of yiew may bewelltakengf V i 5 t Howevr; as a result of recentexperiments anddevelopments inthe line of domestic ,Where' for instance, soft coalmaybe used as heating equipment, it "has been found when usingoil, gasand coke as fuel, that is is possiblestoso organize heatingequipment asto effectively and most 1 economically conserve "the'heat from the fueland obtaintherefr'om va remarkably great percentage of efiiciencycarefully and scientifically providing for the movement of theproductsof combustion at such rates and through such passages as will cause themto give up the greatest possible percentage of theirheat before theyleave gas outlet -6-' adapted tobe connected with ahuilding flue. W Aorder therefore to get the above menjtioned desired resultswithmy'boiler; I so conjstruct 'my boiler asto surround the combus-:tion' c'hamber with a' water leg 1-7 communicatively connecting acentral-Water chamber :8-: off an upright heat economizer sectioil"u'5tof the-boiler with water leg 7i- -and; water '01" a steam chamber -9:through lower water passagei'l0--iand up- .per water or steam passage-11. 2 f v Between the main boiler section and economizer section *5 Iprovide a central gas chamber '12.

About combustion chamber 1, I profrom flue l3-immediately to the houseflue they would be discharged and lostwhilestill holding the temperatureof a very high degree varying from 500 to perhaps 15OO degrees whichwould be as has been in the past, a great loss of heating energy.

But in order to conserve this normally lost energy for more extensive'hea'tingpurposes and for more economical operations ofthe heatingplant,I' conduct the hot products of combustion coming from the flue-13+ first through a centralgas chamber +12 where they come in contactwith sheet of the economizer section forming the enclosing wall forcentral water chamber S-E of the economizer section .5. From thiscentral gas chamber the gases pass upthrough opening"16 into upper gaschamber"17 through a plurality ofgas tubes Il4 through which they settleto lower levels as they get cooler and .as they settle they give up agreater percentage of their heat to the tubes causing the waterin waterchamber 8} to become heated thereby before the gases move out throughlower gas chamber 3 to outlet '6- from which they pass i'nto'tliebuilding fine ata comparatively low temperature. By this arrangement, Iobtain what is known as the counterflow principle of'heating water in amost remarkably eflicient man ner with aboiler and economizerorganization that is compact, substantially made and economical tooperate as well as convenient to move and setup. I

There may be occasions when it would be desirable to provide for the hotproducts of combustion to pass directly. into the building flue throughan outlet 18 in order to create a temporary draught for quickly startinga fire in combustion chamber 1 in which case damper 19 preferablyoperated by thermostatic control, would be automatically closed within apredetermined timelimit and cause the hot products of combustion then tobe directed down through tubes 14' to lower gas chamber 3 and out to thebuilding flue. V In a study of the drawings, it will be observed that Iprovide for the supportof the coke -20 a grate '.2*1' when coke is usedas a fuel) but when oil is used as a fuel the "oil-burner '2 2'f maybeuseda nd grate -'21 may be removed. Natural orartificial gas could beburned ina manner similar to the arrangementprovided for burning oil.

Whenit 'isdesired to look into the combustion chamber or put coketherein, door -23 may be opened'for this purpose'and when coke is usedash door 24 may be used as an ash clean-out door.

By observing Fig. 3 it will be noted that I provide along with flue--13- a similar fiue l3 spaced therefrom so as to throw the gases, whenleaving the combustion chamber, in contact with a greater area of sheet15 of economizer section 5 as the gases enter central gas chamber 12- Aclean-out hood -25 is provided; above gas chamber 1 7- ofthe economizersection of the boiler while in addition to out-let 6- in lower gaschamber 3, I provide other outlets and 27- 'thatmay be more convenientinsome. situations for attachment to a 'buildin g flue depending on theposition the heating'plant is required to sit ,in in relation Whenoutlet 6 is connected with the building flue, then outlets 26 and -27areclosed with a suitable hood 28.

Openings 29' and 30 may be used "as convenient connections with waterleg When the boiler'is assembled a pair of side plates 31' and 31- aresubstantially held into normal operating position by a hood 32 as wellas by rods connecting the two plates together indicated by numerals 33and -34.-.' A draincock 35'- is provided at the lower end of the casingsurrounding water leg 7-.

i F or convenience and safety water gauge 36- is provided together withtest valves '-'37 While a steam gauge 38 is used {qr determining steampressure developed in the boiler.

A damper control device indicated by numerals 39 4O, a'nd 41 and 42' mayb'e satisfactorily used.

" A floor pan 41-is used for the floor support of the-boiler. Numeralet6-' indicates a steam and water spud. V

, It will be observed that a return pipe connection 43 is provided inthe base of central water chamber of the economizer section and when thecold water enters at this point the hotproducts of combustion at theirlowest temperature start heating the cold water and as morecold waterenters and the water already admitted becomes warmer, the warmer waterrises in the central water chamber and establishes communication withwater leg 7 of the main boiler through passage 10.; and thus is somewhatheated before it enters water leg 7 which incompasses the combustionchamber 1. It is to be especially noted as thewarmer water rises in.central water chamber -8 that it is caused to rise moreforceiullybecause of cold water displacing it than through the fact thatitbecomes heated.

The sheets 45- and -4;7 may be made parallel in order that all'uprighttubes may be made of equal length butthe upper tube sheet 45 over thecentral water chamber is inclined toward passage 1l connecting the twowater compartments; thus to avoid of the economizer section.

To those skilled in the heating art, it will be evldent that certainminor changes may be made in the structure above disclosed withoutdeparting from the spirit and scope of my invention but the preferredarrangements of essential features of my boiler have been hereinabovedescribed and illustrated in the drawings herewith.

Having thus described the nature of my invention, what I claim is:

1. A counterflow heating boiler comprising a pair of upright heatingunits operatively connected detachably by upper and lowerwater'connections and separated by a gas chamber communicating with saidunits and disposed intermediate said units formed by detachable sideplates extendingbetween the units and a hood therefor, the first uprightimit having a combustion chamber and a water space above said combustionchamber, the second upright and counterflow unit provided with a centralwater chamber, a detachable clean-out hood and an upper and lower gaschamber communicatively connected through gas tubes extending uprightlythrough the central water chamber, upper and lower tube sheet-s for saidcentral water chamber of the counterflow unit; said upper tube sheetinclined to direct the hot water and steam through said upper waterconnection between the units to provide unrestricted movement of hotwater and steam from under the upper tube sheet, outlets from the upperand lower gas chambersof the counterflow unit connected with the houseflue; means for admitting cold water to the lower part of the cold waterchamber of the counterfiow unit and means for discharging hot water andsteam from the top of said water chamber ot the first unit.

2. A boiler of the character described comprising in integralcombination a boiler unit including an upright combustion chamberencompassed by a water jacket and water chamber and an uprightcounter-flow economizer unit spaced from said first unit and providedwith upper and lower gas chambers and a central water chamber, anintermediate gas chamber between said boiler unit and economizer unit incommunication with both units and extending throughout the height ofsaid units; said economizer unit and said boiler unit being connectedwith each other by upper and lower Water connections and by intermediatedetachable side plates engaged by a hood provided with a detachableclean-outcap and closing the top of said upper gas chamber and saidintermediate gas chamber; said intermediate gas chamber communicatingwith said upper gas chamber of the counterflow unit by a gas passageregistering with the upper gas chamber of the counterfiow unit andcommunicating with said combustion chamber of the first unit through hotgas passages disposed relatively lower than the gas passage leading tothe upper gas chamber of the counterflow unit; said.

economizer unit provided with a plurality of upright gas tubes extendingthrough the central water chamber thereof supportably secured to upperand lower tube sheets; up-

per and lower water connections for com municatlvely connecting theeconomizer water chamber with the water chamber of the boiler unit; saidupper tube sheet inclined to meet and register with said waterconnection between the units; gas discharge a fiues connected with saidupper and lower gas chambers of the counterflow unit and with the houseflue and water intake and out let connections for the water chamber.

3. A counterflow heating apparatus comprising in integral cooperativecombination an upright boiler unit and a counterflow heat economizeroperatively connected therewith as an integral unit by side plates so asto provide an intermediate gas chamber between the boiler and economizerextending throughout their height, an upper and a 7 lower gas chamber inthe economizer connected by a plurality of upright gas tubes supportedby upper and lower tube sheets forming a central water chamber betweenthe. sheets; a central combustion chamber for the boiler unit-surroundedby a Water leg and water chamber; said water leg and chamber of theboiler communicating with said central water chamber of the economizerthrough upper and lower water pipes; said upper tube sheet inclinedtoward and registering with said upper water pipe to direct movement ofwater and steam there through fromthe economizer unit to the boilerunit; said combustion chamber communicating with said intermediate gaschamber through gas passages in a manner to discharge hot gases from thecombustion chamber first into istering above the economizer unit, gasdischarge connections with said upper and lower gas chambers operativelyconnected with the house flue.

In witness whereof, I hereunto set my hand this 11th day of J ulv, 1927.

j LOUIS D. SUMMERS.

